const canvas = document.querySelector("#canvas");
const context = canvas.getContext("2d");

const SHADOW_COLOR = "rgba(0, 0, 0, .7)";

context.shadowColor = SHADOW_COLOR;
context.shadowOffsetX = 4;
context.shadowOffsetY = 4;
context.shadowBlur = 5;
context.fillStyle = "#f1f1f1";
context.strokeRect(100, 100, 100, 100);
context.fillRect(300, 100, 100, 100);
